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OsAAP6 functions as an important regulator of grain protein content and nutritional quality in rice

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  • Bo Peng

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Huili Kong

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Yibo Li

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Lingqiang Wang

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Ming Zhong

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Liang Sun

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Guanjun Gao

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Qinglu Zhang

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Lijun Luo

    (Shanghai Agrobiological Gene Center)

  • Gongwei Wang

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Weibo Xie

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Junxiao Chen

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Wen Yao

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Yong Peng

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Lei Lei

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Xingmin Lian

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Jinghua Xiao

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Caiguo Xu

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Xianghua Li

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

  • Yuqing He

    (National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Hongshan District, Wuhan 430070, China)

Abstract

Grains from cereals contribute an important source of protein to human food, and grain protein content (GPC) is an important determinant of nutritional quality in cereals. Here we show that the quantitative trait locus (QTL) qPC1 in rice controls GPC by regulating the synthesis and accumulation of glutelins, prolamins, globulins, albumins and starch. qPC1 encodes a putative amino acid transporter OsAAP6, which functions as a positive regulator of GPC in rice, such that higher expression of OsAAP6 is correlated with higher GPC. OsAAP6 greatly enhances root absorption of a range of amino acids and has effects on the distribution of various amino acids. Two common variations in the potential cis-regulatory elements of the OsAAP6 5′-untranslated region seem to be associated with GPC diversity mainly in indica cultivars. Our results represent the first step toward unravelling the mechanism of regulation underlying natural variation of GPC in rice.

Suggested Citation

  • Bo Peng & Huili Kong & Yibo Li & Lingqiang Wang & Ming Zhong & Liang Sun & Guanjun Gao & Qinglu Zhang & Lijun Luo & Gongwei Wang & Weibo Xie & Junxiao Chen & Wen Yao & Yong Peng & Lei Lei & Xingmin Li, 2014. "OsAAP6 functions as an important regulator of grain protein content and nutritional quality in rice," Nature Communications, Nature, vol. 5(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5847
    DOI: 10.1038/ncomms5847
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    Cited by:

    1. Bo Peng & Kun Xu & Kun He & Dong-Ying Tang & Juan Peng & Xia-Yu Tian & Yan-Fang Sun & Xiao-Hua Song & Lu-Lu He & Rui-Hua Pang & Jin-Tao Li & Quan-Xiu Wang & Wei Zhou & Hui-Long Li & Hong-Yu Yuan & Xin, 2019. "Genetic Basis of Giant Embryo Traits and Effects of Environmental Factors on Giant Embryo Rice," Journal of Molecular Biology Research, Canadian Center of Science and Education, vol. 9(1), pages 149-149, December.
    2. Bo Peng & Qing-Xi Zhang & Duan Wang & Xiao-Yu Sun & Xia-Yu Tian & An-Qi Lou & Jing Qiu & Yan-Yang Sun & Xiao-Hua Song & Wei Zhou & Quan-Xiu Wang, 2022. "The Function of Amino Acid Transporters in Plant," Academic Journal of Chemistry, Academic Research Publishing Group, vol. 8(3), pages 131-137, 07-2022.

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